Ore-concentrator.



B'. DEISTER.

OBE GONGENTRATOR.

APPLIGATION FILED SEPT. 25, 1909.

Patented Oct. 8, 1912.

3 SHEETS-SHEET 1.

E. DEISTER.

ORE GONCBNTBATOR.

APPLIOATION FILED SEPT. 25, 1909.

Patented Oct. 8, 1912.

3 SHEETS-SHEET 2.

WHA/58858,

ffmc 72. f1@ f5 ZWV E. DEISTER. ORE CONGBNTRATOR.

APPLIOATION FILED SEPT. 25, 1909.

Patented Oct. 8, 1912.

NVENTOH Emz'leis Fev- ATTURNEYS UNITED sTATEs'rATENT OFFICE.

EMIL DEI'STER, OF FORT WAYNE, INDIANA, ASSIGNOR TO THE DEISTEB GONCEN TBATOR COMPANY, OF FORT WAYNE, INDIANA, A CORPORATION 0F INDIANA.

OBE-CONCENTRATOR.

Specification of Letters Patent.

Patented Oct. 8, 1912.

Be it known that I, EMIL Dmsrnn, a citizen of the United States, residing at Fort Wayne, in the county of Allen and State of Indiana, haveinvented certain new and use` fulImprovements in Ore-Concentrators, of which the following is a specification.

This invention relates to devices for the concentration of ores and especially to devices for the concentration of ores in a finely divided state.

My present invention is an'improvement upon the 'invention described in m application for Letters Patent filed une 24, 1907, Serial Number 380,564, and it consists in the novel construction of parts fully described hereinafter and villustrat'ecl in the drawings in which y Figure'l is a perspective view of the table as a whole; Fig. 2 '1s a`top'view; Fig. 3 a top view of the table without its linoleum covering; Fig. 4 a cross section on the line w-f/w of Fig. 3; Fig. 5 a cross section on the linea-w; Fig. 6 a cross section on the line y-g/ and'Fig. 7 a cross section on the line 2-2, all' of 3, and Fig. 8 a perspective View4 ofthe ta leadjusting mechanismI and support. t

Like letters and numerals indicatey like parts in all the figures.

Fig. V1 gives a general `view of the table and the relations ofits arts. References will be made later to the etails shown in it which do not appear in the other figures.

Fig. 2 is the main figure of the drawings and a description of the apparatus and its operation can be most conveniently given by references to it. `The body of the table is a solid structure `without hinge or flexible joint in any part. It is designated as a whole b the numerals` 1, 2. 3, 4, which refer to outsi e corners. In the following descri tion the side 1-2 will be referred to as t e head of the table, 3-4 as the foot, or tailings side, 1--4 as the front side and 2-23 as lthe rear side. The mechanism shown as O in Fig. 1 communicates at O in Fig. 2 an oscillating or reciprocating movement both terms will be used) tothe table in the irection of the arrow in a manner well known.

The table is mounted on adjustable supports' differing from one another in their relative inclinations, which are designated in Fi .'2 as A, B, C, D, E F, and G, withbro n lines separating t em by boundaries indcated. by small letters. Thus section A is a b c d; section B is b e f g c; section C is e h f; section D is 1I j lc o g; section E is j Z la; section F is c g m n and section G is g o vm. The table is covered with some lexlble, waterproof material, such as linoleum, which I prefer.

At 1l 1' 1' are Hat, rounded, wave-shaped ritiles which are formed by strips of wood inserted under the linoleum, as shown in cross section in FiV 4 and 5.

At 1" 1" are ri es located in section C and extending a short distance into section B, as shown. These riiiies are formed Aof thin strips of 'wood placed on the surface of the linoleum in the usual manner. At 1*2 1'2 are similar riiiles located in sections E and D, as shown. Both these last named sets of ritlies are shown in cross section in Fig. 4.

At 1'3 1'a 13 are three ritHes of peculiar construction formedby first placing a strip of wood under the linoleum to produce a.

the table at a little elevation a ove its surface and with a descent suiicient to produce a flow of the pulp from 5 where it 1s introduced, to a hole 6 in the. ottorn of the box where it passes through to the surface of the linoleum. An extension of the feed box continues from 6 to 7 with a slight descent toward 7. From this extension ulp flows through openings on the outer si e and falls upon the linoleum close to its outer edge. To guide the flow of pulp to the openings pointed grooves are cut in the bottom of t e box, as shown.

At 8 is a splash box through which water is supplied to the dressing water launder 9.

From 10 past l, 2 and 2 to 3 the table is bordered by a board forming a water-ticht joint with the edge of tlie table and high enough to inclosc all the material placed on the table in its operation. From 10 to corner tis the concentrates discharge space, and from` 3 to,I d the tailings discharge.- There may also be, if thm-material "being worked calls for it,'a middl-'ings discharge space vbetween lc andthe corner 4.

At l1 'and 12 are twol aprons-.borderingthe concentrates discharge space and the Atailings side of the table, respectively, by'which the concentrates and tailings are guided into boxes or other suitable receptacles. i

In its operating position the corner l is the highest part of the table. Section A is a plane surface slopingfrom the.V corner a, (which is the corner of the tableinside the Aincllosing board) toward the line b c, and also fromfthe head of the tabley toward the' foot, but with a steeper slope'from a to the line Z2 c than in the other direction. The

section VB slopes from the side b -a to the side l e f, but with less steepness than the slope of sectionA, toward b c; and it also slopes from thehead of the table toward the foot.

Section C is nearly level in the operating position of lthe table, but has slight inclination from the line e f and also from. the point f, to the corner it. ln consequence the corner i1, is the lowest point in the-section.

i l Alonglthe lower side of thatsection is a dam or high vrifile L f, tapering toward f toa height just above the adjacent riiiies. r r', the top .of which in the operating position of the table is level from l1, to f and high i enough to Hood the .riiiles 1" 7" and form a 'is a triangular space z, f

shallow p ool covering the section C approximately to the line e f.V Below the dam h f i which 'forms a sort of apron to that dam; its object being to enable the linoleum-to pass from section C to the lower levelof section D without a too sharpk exure. A cross sectionof thisv section is shown at it f z' in Fig. 4. .f Section D,

. bounded by z j [c "of g, has as its highest point the corne/rl g, from which it slopes toward the line .-j le, -which is practically level. There is a slope from g tow', butz' is higher than j. Space Eis practically level. Along itsouter edge is adam or high riflie extendling from Z to the corner of lthe table at. p.

Inwthe operating position of the table the top oft-his dam is practicallylevel, but with respect to the surface of the table it is high.-y

est at the end Z and feathers. to an edge at p.

Its effect is to flood that part of the riilles r2 r2 lying in section E and cover section E with a shallow pool extending approxif mately to the line j la, and deepest in the *regionl of the corner Z.v tically level inthe line of reciprocation, but

` slopesrslightly from c n tog m. SectionG Space F is prac-v table from the. PPP-' Comer .of setzt-ioni-y A where it is delivered throughthe hole @in l rear side-,of the extension ofthe feed box.

these and falls upon the linoleum close yto its outer edge. To direct the flow of pulp to the openings pointed grooves are c`ut 1n the bottom of the feed box extension; as shown. f This table is designed particularly for the treatment of ine slimes, in which the particlesJ of-mineral are extremely small, and its operation will be described first W1th ref- 'smaller 4thanthoseV at '13, which form the 4Pulp flows through the Iopenings between-l erence to material ofthat' kind. Asv soon as the pulpbegins to dow across section A a process of stratification begins, 4augmented by the'jarring effect of the oscillatingmovements of the table, in which the particles of mineral settle to Vthe bottom of the layer and l cling to the surface of the table', whilethe grains of=sand and lighter material roll over them in their onward flow. The tendency of the oscillating movements of the table is to cause the particles of lmineral to creep along its surface in the direction of the arrow in the drawing. But during the iiow of the pulp across section A this tendency is overcome by the force of gravity, and the material ows in lines substantiallyperpendicular to the line b c at an angle of approximately'forty-ve degrees to the line of oscillation. But when it crosses that line into section B Vthe effect of gravity upon its movement becomes relatively less' and the eEect of the oscillation relatively greater, because of the flatter slope of section B. v'llhe effect of the oscillation is less upon the sand and lighter parts of the material than upon the mineral. In consequence thesctwo constituents of the pulp tend to part company after crossing the line b cf-the lighter part to continue in adirection induced by the Aslope of the surface over which it is passing, and the mineral particles tofbe turned aside from that course by the influence of the oscillating movements of the table to a direction more I ln early in the line of the oscillation. The rlilies r 7' r assist this tendency by means fof the troughs between them down which the particles of metal creep toward the concentrates discharge. ln this way a considerable part-usually the larger part of the mineral is separated from the pulp without crossing i iso " thus taken by the metallic particles is shown y '25 of the material continues, and so promotes.

iso

the third of the riiiles r r 1'. A greater or less part, however, of the metallic particles will cross the last of those riiiles and continue across section B, turnin all the time, more and more toward the direction of oscillation indicated by the arrow. In the meantime the sand, which is the next heaviest constituent of the pulp after the mineral, in its flow across section B, in which it passes over the layer of ,metallic particles, encounters the pool of water in section C formed by the dam h f. This checks its onward movement, and it settles to form a bar' in the edge of the pool alon the vicinity of the linee yThis, in turn, c ecks the movement of t e mineral, which then, under the controlling influence of the oscillating motion, creeps along the edge of the bar toward the concentrates discharge in a path nearly.

parallel with "the riflles r r r. The course in a general way bz the fine, undulating lines crossing sections and B. 'lhis circuitousness of travel is an advantage because it prolongs the time during which the treatment a more perfect separation of the mineral from the other constituents of the pulp.

While altogether the greater art of the mineral is separated from the ot er constituents of the pulp by the processes so far described, a portionI of it ,continues its travel across the space C in the pool formed in that space. The riflles r 7" under water tend to arrest this movement and operateto conduct the relatively small portion of the mineral which 4reaches them toward the concentrates discharge under the controlling influence of the oscillation of the table. The water which passes over the dam li f carries with it the greater part of the lighter parts of the pulp, including the sand, into section D. No considerable amount of mineral crosses this dam. If any should, it is arrested by the riiiies r2 r2 and conducted by them to the concentrates discharge. The function of the pool of water in se'ction E adjacent to D is mainly to assist in the final process to be now described.

By virtue of the actions which have been already'. described in connection with sections A and B the concentrated mineral is directed toward the space between the ends of the iiiiles 1" 1" and the yupper end of the concentrates dischar e. At this place the surfaceJ of sections A, B and F coincide. From this point on the to be performed upon the mineral is what is known as cleaning up, which is the se aration from the mineral of the sand w ich has found its Way to that point and conductin it to the tailings discharge.

This is e ected first upon section F, which 1 this is ordinarily principal operation a .free and ra id passage across that section under the in uence of the oscillating movement, until it reaches the edge of the concentrates discharge and passes across the apron into the concentrates box1 or other receptacle provided for the purpose'. This cleaning up is continued further on section G and the outer end of section D. As stated, the slope of section G from g m to o p is relatively steep, but 'its surface is practically level in the direction of oscillation. In consequence of this the selparated mineral is driven rapidly toward t e edge of the concentrates discharge while the rapid flow of water from g m to the foot of section G efectually washes off the sand which may lie on the top of the separated ,mineraL One advantage of the steep inclination of section) G is that a less amount of water is required than would be if the inclination were less. The riiiles r f" r3 assist in this process by furnishing protecting troughs leading to the concentrates dischargey along which the separated mineral travels without bein washed down the steep slope of section This effect is supplemented by riiiles 1' 1'* r* 1'* r4, which promote also the movement of the separated mineral toward the concentrates discharge. All these ritiles are very shallow, and are preferably placed at an angle to the line of reciprocation.

A sprinkler is shown at 16 in Fig. 1, which is attached to or fixed alongside the table in front of the concentrates discharge space, the function of which is to s rinkle water in fine streams upon the sui` ace of the table close to its edge along that space. The object of this is to supplement and aid the act-ion of the oscillating movements in driving the mineral toward the edge of the concentrates discharge by keeping the surface near the edge of the table clean and covered with a layer of water in motion.

A'sand bar is formed in the pool produced in section E, which also serves to arrest the movement of any mineral which may find its way into section D, although a negligible quantity.' These bars, it may be noted, while continuously present during the operation of the table in greater or less development, are all the time changing in the material in them. There is a continual accession of fresh sand along their fronts and a continual washing away `of sand from their tops.`

It will be seen that the operation of this table in the manner described depends upon effects produced by t-he relative inclinations of the sections described combined with the oscillating movements of the table. Thus it is necessary that section A shall have such inclination as that substantially all the material delivered upon it shall pass across it toward line Z c and not down it toward the will sometimes happen, also, that the pulp line c n, and this notwithstanding the modifying influence of the oscillation of the table; and also that section B shall be of such lessinclination than section A that when the material reaches it in crossing the line b c the influence of the oscillation shall preponderate over the iniuenceof gravity tov such extent as to turn the stratified mineral down section kB along the riflles r r r and along the sandbar which .forms in the edge of the pool in section (3.`

Y While, `as stated, thistablefis designed specially forl the treatmentof fine slimes, and will ordinarily be `used for thatpurpose, itrwill sometimes happen 4that -in consequence ofI imperfect. classification of the material, or other'cause, it Will be necessary to treat pulp upon it containing particles `of both sand and metal coarser than those found in what is .properly called fine slimes. Such coarse particles respond more quickly and in greater degree to the infiuence of the oscillating movements of the table than finer particles. They tend, therefore, to vtravel down section A toward the concentrates discharge instead of crossing that space toward the line b c. This is objectionable, because in that short distance of travel the separation ofthe mineral from the gangue Will be incomplete, and an undue proportion of sand Will be precipitated upon the cleaning vup sections F and G. In 'order to treat this `kind of material the operator will raise corner 1 of the table more or less, so .as to increase the pitch of inclination of section A,

and so augment the relative force of gravity= upon the material passing over it. It

to be treated Will be poor in mineral and contain an undue proportion of gangue. In that case use may be made of a hole in the bottom of the feed box not.` heretofore re ,ferred to, but shown at 15 in Fig. 2.

yAt 15al yisshovvnathi'n. cleat nailed on the bottom offthe box to direct the flow of the under layer of pulpfto .the hole 15. Inthe ordinary use of the table this hole is stopped by a pin, but in the case of very poor pulp it may be opened to discharge part of the pulp upon section B.

The sk'lled 'operator will soon learn to adapt the table bysuitable adjust-ments of elevation yof .its different parts, and the supply and distribution of pulp, and of Water upon it, to make.w it conform under varied conditionsofWorking as nearly as possible to ,the mode` of operation WhichI have described.

The diversified surfaces of the table Which I have described may bel made .by first cutting and forming them in thelwooden body or top of the table and then covering it. with the linoleum or other covering tacked down to fit accurately the various surfaces; or they may be formed by making the top of the table with a plane surface and putting on it pieces of Wood or other material of such size and form as to give the desired diversity of surface; or by these methods in combination.

Of these I prefer theV third,"and I have shown it in Fig.3,|which isapian vieW of the table, the covering. beingremoved therefrom', which is'to betakenin connection with the cross section views in Figs. 4, 5', 6 and 7, the linoleum covering being added to these views for the sake of clearness. y

What I believe to be the best 'mode-of conp struction'is as-ffolloWs: A strong frame isl made in the form outlinedin Fig. 3 with' cross pieces serving as joi'ststo support r'the' table top extending from the side 1 4" to sides 2-2-3, the, upper edges of which cross pieces are inthe samel lane from the side 1-42 to the line h m, vigs.` 2 and 3. From thatline to the foot lof the tableat 3 4 andthe line h Z'Ithe cross pieces are cut down progressivelyso that their upper edges occupy aplane descending slightly from the line h m. On these cross pieces/the top or deck of thev table (as I shall denominate it) sections F and@ are planed down to forml the proper slqpes for those sections, as hereinafter described. The further diversities of slope are then obtained by nailing Wedgeshaped, Woodenpieces lor'boards Where nec-- Wedge-shaped additions I will designate for brevity as 'Wedges. Taking upthetable surface section by section I can noW- state how it is finally made ready for the linoleurn covering.' y

Section A. of Figs. 2 and 3 is formed'by nailing a Wedge 20 (Figs. 3 and 5) on the upper surface of the rdeck 21, the thickest part of the Wedge being at the corner a and its body tapering to Va feather edge along thev line b c.' This Wedge, therefore,vcovers,sec tion A entirely.

Section B contains no Wedge or other addition to the surface of the 'deck asalready described. Strips of Wood 22 (Fig. 3) arel'j nailed tothe deck Within this 'section B an extend from the vicinity of corner 2 of the table in the direction ofthe concentrates discharge at 11, as shown. These strips 22 form (when .the covering is placed on the table) the flat, rounded, Wave-shaped `riii'les rrrof FiOf 2. 'f

Section (QJ. is formed by nailing on the deck V21 a Wedge 23 (Figs. 3, 4, 5 and 6) Whichisthickest at. the corner h and tapers to a f vfeather edge along the line e f, and also to a point at Alongside this broadflat wedge is nailedl a narrow wedge extending frein Vim' to f, which is shown in cross section in Fig.

4; asJII f z'. The top lineh f of thisvedge Coiiicides in elevation with the topline h f l v j'of wedge 23,"and it tapers to a ,feather edge along the line z' f. .The taper ofthi's `Wedge rthelinoleum Icoveringto pass fromhthe sursection D 'w1thout tooy sharp 'iexure.= The two wedges 23 and 7L fz' constitute inretfect,

f 'the ycorner h.

a'swill 'be seen, a single wedge with a crest along the line L f. The slope of that 'part'of it lying in section C toward the headof the table and toward the concentrates discharge is'of lsuch inclination that when the table is tilted'tov its `operating position section C is f 20. L

' 'slightly from the feather edge e ff'of the'y nearly level, but slopes downward very .wedge A23ai1d also from the pointf ltoward Section D Section Eris forrnedfby nailing'a edge25 i fon'- the deck 21"(Figs.' 3, 4) covering the enf :tire section. This 'wedge is thickest ,at the 'operating position of the table.

- "from the line c g 0 to the edge of the conosclllatlon in the operating positlon of thev pointl and tapers to a'feather edge 'on the line jc. `The taper of this wedge 1s such that its surface 1s practically v level in the Sect-ions F and G are prepared down the boards lof the deck in a slight slope centrates discharge n. m p. This .gives section F the same slope fromcl nto g m as the surface of section' B, and a practically level surface from c g to n m in the direction of table; Aan'd it gives 'to section G the same slope from gm to o p as that of sect-ion Dv toward the'tailings side-'and a practically levelsurface inthe direct-ion of oscillationl in the operating position of the table.'

"A number of stripsof wood 27 (Fig. 3)

are nailed across the planed down portion of the deck 21 which forms section G, the

- the deck'i21'f`which forms section D, and be'- strips extending preferably from the concentrates discharge edge over 'into that part of l' ingfplaced at an angle withy respect to the c'incentrates discharge edge and increasing in lengthtowaI- d the wedge t f When the lin-oleum is placed'on the deck ,over these lstrips 27 they produce wavelike elevations' -in sections G and D, on which the riiiles r3 113 r3 are placed, as before described.

All the wedgesl which I have described present plane surfaces without curvature or,l

has the unaltered surface of the` deck, as described, without 'the 'addition of by planing" `livev feet, six inches in 4length vand diversified surfaces and slopes ofthe sections as stated in the preceding description of Fig. 2.

I am aware that it is not usual to state actual dimensions 'ofparts in a patent speciiication and'. I thinl itlikely'that the description., which'. I have already given of lthe concentrating table which is the subject of my' lnvention is sufiicie'nt to enable one skilled in 'theart to make and use it. But

it is necessaryv in' the treatment of fine slimes that the slopes and 'adjustments ofthe differentsections' or subdivisions lofthe table shall' be adapted with nicety to the work to y be done in 'order tosecure the .best results,

yand it 'will undoubtedly facilitatethe work of yeven a skilled constructor t-o state the dimensions Iof, some of the morel important parts of the table as 'I have'm'ade andused it with success. i y The following are the' outside dimensions of the finished table; side 1'-2 six feet and 42 inches; side2-'2 six' feet and of an inch; side 2'3 fve"f eet;side 3`4 four feet and 1.1 inches; side 4?-1 nine fet and 7 inches.` The anglel 2 2 andthe Aangle l2111@ is approximately'o-ne hundred and'four degrees. The' slope of the deck between theiline m andthe foot of the table as compared with the surface of the .deck between that line and the head of the table is one and one quarter inches.

' Wedge 20, Fig. 3, is five 'sixteenthsof an inch thick at a and three-sixteenths of an inchjthick at d. From Zto c the end-of the wedgehas a' short bevel just suflicient to permit' the linoleum to pass smoothly from the wedge to section F. The distance from a to'd (Fig. 3) is six feet, two inchesythe distance from a. to b is fourf'feet and from d to o vis 'ten and g inches. The line d c is parallel with a b. ,Wedge 23, Fig. '3,fis one andr'inches thick'at z. This side z, f is parallel with the side 1e`2;the'side s 'is elghteen and 2f inches in length, and the side s e three feet. Wedge 25, Figp', is one inch-thick atl. The side 7' l is eighteen inches long and the side Z 7c four feet and live 'inches long. The wedo'e fk f-, Figs. 3 and 4, is one and inches thick at hand the end of ith z' is five Y 'and f1 inches wi de. These wedges are preferably formed of wooden strips about three inches wide'tapered to a. feather -edge' at one end and of suitable thickness* at the other and nailed upon the deck about vaf quarter of an inch apart. `It is to be-understood that thesedimensions and the details of construction of frame "and deck above f given are not essential to the embodiment or use of my invention, but may be varied ac'- cording tothe judgment lof the constructor.

isa right angle,

I have spoken 1n several places of the I operatingA position of the table.- -This is a position in whicl'rthe body of the table is` to a level'i the direction of their lengths.'` The elevation of the corner 1 should be such' as to cause the pulp to flow across section A' in a direction substantially perpendicular to the line b c. The high riflle which is nailed on the crest of wedge -23 to flood section C is S of an inch thick at h and tapers to il; of an inch at f, and continues from that point? to m as a. thin riflle. The high rilie which is nailed to the crest of wedge 2 5 is E inch: thick at Z and tapers to lg of an inch at p.f These `arel shop construction thiclmessesf The skilled operator may have occasion to' vary either or both of them slightly by.

' planing down the top of the riiiie ya little, or?

tacking a thin strip on it in orderto get the exact height of the dam for the most perfeet working under the conditions present.

InFig. y8 I illustrate the adjustable sup-,f ports for the table yon which the latter rests;- They consist of a pair of movable posts 30' having the upper end of each member pro vided with a socket which is adapted to engage a suitable ball-shaped casting attached' to the bottom of the table, one pair of posts,L being arranged on each side of the table.y The vlower ends of these posts are movably supported in suitable guides 31, which are5 `mounted on a base 32. Theseguidcs aref provided with suitable openings through which are adapted to pass wedges 33, the

inclined faces of one pair of Wedges lying;

in one direction, those of the opposite pair i lying in the opposite direction, as shown in the drawing. Each post is adapted to be raised and lowered as theA wedge moves yto and fro beneath it.` Each wedge vof a pair is connected to an arm 34 Vwhich is fixed on a shaft 35, which shaft is revolubly mounted on bases 32. An arm 3,6 is fixed on; shaft 35 and is adaptedfto engagea rod 37, which rod extends outwardlystozthf'side ofi the table andy carries omits :outer end ya hand wheel 38j b, whichtherod'may he ro' tated. Thisro lisxsuitably@mounted and connected to arm 3611so that when it is ro, tated arm 36, rshai't 85 and arm 34 will be rocked totmove the wedges 33 in the direc tion desired.l Since .the inclined surfaces of Y one pair of wedges lie in yone direction and those ofthe other. pair lie in the opposite direct-ion, it is evident that the rocking ofarm 34 lin one direction will cause one pair of wedges to elevate its abuttingpair of posts 30 and the other pair. to lower itsy abutting pair ofiposts. In consequence of this arrangement lof wedges and operating Yconnections anydesired adjustment of in`l clination of the" table which .rests on the posts will'be accomplished thereby. I also illustrate in Fig. 8 the mechanism by which the oscillating movements are produced in part of this invention and consequently I do not describe it further than to state that rod 40 is connected at one end to the table, the other end thereof being connected to a suitable mechanism() b which the rod and table are reciprocated lnfthe desired manner. This mechanism is also illustrated in F ig. 1, which figure also illustrates the complete table embodying my invention, the table surface here shown being identical with that illustrated in Fig. 2.

1 .and,2,' is preferably placed adjacent to the feed box extension at 7. This launder does not extend to the edge of the concentrates discharge, but terminates a little short washthe sands away from the mineral before the latter reaches the edge of the concentrates discharge. In the bottom of this launder adjacent to openings 9 therein, are

gatesl 9b which are adapted to be turned in- ,more or less wash water to pass through opening 9a at any given point therein. By this feature of adjustment the operator is enabled to procure an even distribution of wash water on the surface below, or to increase or diminish the flow at any point.

The principle of my invention, so far as it can be expressed in general terms, may be stated substantiallyas follows `first, to construct upon the table a series of spaces or sections extending from its head to its foot, each section differing in the inclination of its surface from the section or sections contiguous to it, over which sections the material being treated will tend to flow in the operation of the table under the influence ofgravit-yfrom the feed box to the tailings discharge; second, to provide adjacent tb the concentrates discharge a space or spaces upon which the final cleaning upof the separated mineral is to take place; third, to so construct and arrange the first mentioned sections thaty the separation of mineral particles from the other constituents of the pulp shall be effected in greater or less degree in each of them as the' material passes over it. These sections I denominate for distinction the concentrating sect-ions, and they are the sections A, B, C, D, and E in Fig. 2 of this application.4 By the inuence of the oscillating movements of the table the mineral particles thus separated are caused to move over the surface of the table toward andyto "and into the vspace aforesaid which :is adjacent tothe concentrates dischargefwhich, for distinction, I denominate .thefcleaningznp space. In the table as described in'this specification this space consists of two contiguous sections F `of that edge, and is designed to effectively.

dependently of each other so as to permit the table. This motion mechanism forms no A wash water launder '9, shown in Figs.

arranged a plurality of pivotally mounted and G and the upper or forward portion of' Sec-tice 12,:wblhfla-.hemelsnaamthebetten;

'fn @entiende-Spese andl ,Il isla-11..' .sneak .afthis es' .Par-tien. 0f thetable ,lasoma ofthe ,clams-.as

4f i ,a ,spacer intending, ihaiiby .t9 ineludethef entireleaalfieilaereaf ahaharatb single .lpaceearlivdsda Int-Q tua erinnere rEach ef thereEaoaeeettatiaasetana .isttiamina.,l concentrating tableta' ltselfrand.

' toftaefnfetlnaian Pitdtandvtheli features i withrartallar referencia treatment., ofrhe 1,", `'inaterial ,1n [the state inwvhichitwillj be I17e-1' 15, civd'alltht Section-1 LThuS; the mineral, .In tli'suclrresldue of sand. as may remain i i i With-ii glthered [a' f Lrial;w ashing.` Littleor, nothing reaches i, 204 thisJ yspace with the mineral except sandthe r l together an; the.. y elea'ngi:up` space Whereitis,A subjected to.`

. lighter partsfofthegapgue going across the;

charge.' 7

Thet'reatment of-fineslimes" an opera-f 25, titmpfv theptmost -de alicacyv `The move` r .1, ments/,ofi the materialenthe tablegand the- 'separation of the mineralx from the gangue are affected by vvexceeding slight variationsj concentrating rSQQnS.. teithetailings dis' found A tion and, ,maybevariedinmany particulars. V

,'35 tIor exampla. all ,therittiescould be omitted y 'Land` the table :would still` operate fairly Well, f.; and embody my `ipnventroli 1n a substantial,

" sense. lIn particular, it may be saidvthat.

l the riiiies 13721'. ,in section have their-prin- J'giq'cipal utility, 4inthe. treatment yof slimes.

1 4 l `which aregat once fine.Y and rich-Rin mineral.

In thetreatmentof pulp containing a rela- .,.tively small proport1on...of. mineral' they' 1, may be omitted with littleor no diminution 15 int the effectiveness .of the 4machine.

variations of detail maybe made while still Preserving @.inventiom i "WhatIclaimiszA A `1. In` combination av differentially lrecipi, rocating pre- Aconcentrating table having 11ponitsvaorking surface a seriesof coter- Athe.fundamental elements of my.

i ,comprising a series` of cotcrminous sections with. fioors of diverse relativewinclination .having first in order at its' highest point a Other ,i minous confcentrating sections ,with floors, .1, drtlferlng from one another- 1n relatlve 1n-,f

55 clinationfanld extending from its head to its- -`foot over which material lbeingtreated, Willir A l. tendtoflow; successively by'I gravity` from',

v l:the portion receiving the pulpvto the tailj ings Adischz rncre, and havingalso a cleaning 6.9, spaceadjacent to the concentrates .discharge cotermixibus witlhthe series-of concentratfing ksections aforesaid and coincident there-` `with in` elevation upon their co'terminaly w lines,l and receiving material for :cleaning up 5- from each ofsaldconcentratmg sections. z

2. In combination in a differentially reciprocablez Oren; concentratori. -a f table deck .made as-asingle solid structurewithout capacityior fiexure at lany pointfcomprising a series ofA `cotrrmi-nous. sections with floors or. diverse srelative inclinations having iirst inforderatits'highest point a section upon .vvhichthepulp to be-treated "is delivered Which-.section isliof'such slope` that the infiuenceiogravity uponxthewmmeral in the zpulp passing over itin. operation Will predominate over` the -infiuencel of the reciprocatingmovements; and nextf-iniorder a section of such less lslope, `toward lthe tailings dischargeothan the first thatthe influence `ofthe reciprocating: movements1 upon the `predominate over vthe influencelof gravity; and'` next 'in order a third sectlon having a dam along its lower border tocreate a pool.'

above the dam.

3. In combination in made' as a single solid structure without Joint or capacity forfllexurefat .any point .comprising a series ofy cotermi'nousisections With iioors of diverse relative inclinations having first in order vat'its highest point a )section .upon whichthe .pulp to-vbe treated is delivered which section is osuch slope ,that the influence ofgravity upon the mineral in the pulp-passing overit irl-operation vwill predominateover the influence of the reciprocating movements; 'and next in yorder a sect-ion of such less slope toward the tailings discharge than the ,lirst thatithe influence of the :reciprocatingv movements upon ythemineral in the'pulp passing overit will predominate overthe Linuence :of gravity; land 4next in order. a third sectioni having a V.dam along its lower border -to create a pool above the'dam With ri'lies submerged in the pool thereby created... r i

.4.' In combination. in a differentially reyciprocable ore kconcentrator aV4 table deck .made as .a single solid structure without ,jointor capability :of flexure' atany point section upon which pulp isjdel-i'vered `for treatment which section of such slope that the influence-of gravityy upon the min-l eraliin the pulp passing overit in operation u'ill'fpredominate over theiniiuence of the reciprocating movements; andnc'xt in order ,a section ofsuch lessslope than the irst .toward:tlletailings discharge that the influence of the rreciprocating `movements upon the mineral in-theipulp lpassing-over it will Apredominate over theinfiuence of gravity;

and `next'in ordera thirdv section having a y damalong itslower border to create a pooll above the dam .with` -1'illies"spb1nerged in the pool thereby createdl Withwacleaning a differentially ref .ciprocablei ore c'oncentratorma: .table deck :so i

lmineral passingover it inV operatlon will 15 section of such less slope than the first that s ace into which mineral is conveyed from al of said sections and a concentrates discharge to which the mineral passes from said cleaning space with means to supply xwashwater to said cleaning space.

5. In an ore concentrating table a source of power and mechanism to produce transverse reciprocating movements of the table 1n combmatlonwith a series of coterminous sectionsv of diverse relatlve mcllnations, hav,-

.ing first in order a section of such slope that the infiucnce'of -gravityupon 'the mineral in the pulp passing over it in operation will predominate over the influence of the reciprocatmg movements; and next 1n order a the influence of the reciprocating movements upon the mineral passing over it in operation will predominate over the influence of gravity, troughs on the second section angularly disposed with respect to the line of reciprocation and extending toward the concentrates discharge, and a thlrd section ad in operation will predominate over the in-f fiuence of the reciprocating movements; and

next below in order a section of such lessi centrating slope than the first that the infiuence of the reciprocating movements 4upon the mineral passing over it in operation will predominate over the influence of gravity and cause the mineral to turn gradually in thedirection of its travel toward the line of reciprocation, a cleaning space which is coterminous with both sections aforesaid, the slo of which s ace toward the foot of the tab e is greater t an that of either ofthe aforesaid' sections and which receives mineral' for cleaning up irom each of them; and -al section below and adjacent to the second section having means along its lower border to ood 1t withwater in operation.

7. In a differentially reciprocable ore contable the combination of a series of coterminous sections with io'ors of diverse relative inclinations, havingfirst in rorderat the head of the table a section yolf such slope I that the influencent gravity upon the mineral passing over it with the pulp in operation will predominate over .the iniiuence of the oscillating-movements; and next below in order a section of such lessvs'lope than the lfirst that the inuence of the oscillating movements upon the mineral passing over it 1n operation will'predominate over the'inluence of gravity andl cause the mineral to a dam- Lacasse y ,Y i turn gradually in the direction of: its travel toward the line of oscillation; a cleanlng space which is coterminous wit-l1 both sections aforesaid and receives mineral from them both, and a section adjacent to thesec ond section having rilies on its' surface and a dam alongits lower border to flood it` and the riies with water in operation.

8. In a differentially reciprocable ore concentrating table the combination cfa series of coterminous sections with floors of di-` verse, relative inclinations, havingfirst in order at the head of the table a section of such slope that the influence of gravity upon the mineral in the pulp passing over it in operationwill predominate over the influence of the oscillating movements; and next below in order a section of such less slope than the first that the influence of the oscillating movements upon the mineral passing over it in operation will predominate over the influence of gravity and cause the mineral to turn gradually in the direction of its travel toward coincidence with the line of oscillation; a cleaning space which is coterminous with both sections aforesaid the slope ofv which toward the foot of the table is greater than that of/either of said sections, which cleaning space receives mineral for cleaning from both of said sections, the said second section also'having troughs formed in its surface at an angle to the line of oscillation and extending towardF thesaid cleaning space;` anda third section adjacent to the Said second section having-a'dam along its lower border to iood it with water in opera- 1on. l 9. In a differentially reci-procable ore concentrating table the combination with means for discharging pulp upon the uppermost corner of the table of a series of coterminous sections khaving-floors Aof diverse' relativeinclinations oflwhichthe first in order at the head ofthe table is a section of suchI slope toward'the second section that the infiuence ,of gravity upon the mineral in the pulp passing over it in operation will predominate over the inuence of the oscillating movements to such extent as to cause the mineral -to move across the section in lines perpernilicular,y or substantially so, to the' lower border ofthe section; and next in or'- o der'a. section of such less slope than the irs'tthat the -iniuence ofthe oscillating move' j ments upon .the mineral passingover it in operation will j predominate over `the 1nfluence of gravity to such extent as to'cause j the mineral togturn gradually in thel direct'ionjof its travel toward coincidence with the line of oscillation; acleaning' space ias adjacent to the concentrates `discharge which receives mineral for lcleaning from both of said sections, the surface of which" second section is provided with troughs 'lead-l j 5 ing toward the concentrates discharge;y and Vso a third section adjacent to the second section having means along its lower border to flood it with water in operation.

10. In an ore concentrating table a source of power and mechanism operated thereby to produce transverse oscillating movements in the table in combination with a series of coterminous sections on the working surface of the table of diverse inclinations, the rst of said sections having such slope from .the u per corner of the table toward the secon section that the force of gravity will causethe mineral constituent of the pulp passing over it to move in lines approximately perpendicular to the lower edge of the section notwithstanding the oscillating movements of the table, and the second of said sections having such less slope than the first section that the force of the oscillating movements will predominate over the force of gravity upon the mineral to such extent as to cause it to turn gradually in the direction of its motion toward coincidence with the line of oscillation, said second section having also troughs formed in its surface leading toward the concentrates discharge; and a third section adjacent to the second having a dam along its lower side and riiles adjacent to the dam and flooded by it in operation, the direction of said rililes being coincident with the line of oscillation; and a fourth section receiving the overflow from said dam, and a fifth section adjacent to said fourth section and extending to the tailings discharge with a dam along its lower edge to flood it in operation, and a cleaning up space adjacent to the concentrates discharge toward and into and across which concentrated mineral is caused to move out of and from each of the aforesaid sections by the oscillating movements of the table.

11. In combination a differentially reciprocable ore concentrating table, a series of coterminous concentrating sections upon the table with floors differin from one another in their relative inclinations and extending from its head to its foot over which material being treated will tend to flow by gravity from the point of its deposit on the table to the tailings discharge, a plurality of said sections having on their lower borders dams to flood them with water, and having riilles submerged in the pools fromed by said dams.

12. In combination a differentially reciprocable ore concentrating table, a series of coterminous concentrating sections upon the table with floors dill'ering from one another in their relative inclinations and extending from its head to its foot over which material being treated will tend to flow by gravity from the point of its deposit on the table to the tailings discharge, and having a cleaning space coterminous with said series of concentrating sections extending along a portion of the side of the table and coincident in elevation with said sections at their coterminous lines to which cleaning space concentrates are delivered from all said concentrating sections and from which the nished concentrates are discharged from the table.

In Witness whereof I hereunto subscribe my name this 20th day of September, 1909.

EMIL DEISTER.

Witnesses:

HARRY F. KENNETH, ELWIN W. HULsE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

